CI ?

README.md

@@ -227,6 +227,7 @@ degree documented below):
 - We have unofficial support (not maintained by the Miri team itself) for some further operating systems.
   - `freebsd`: **maintainer wanted**. Supports `std::env` and parts of `std::{thread, fs}`, but not `std::sync`.
   - `android`: **maintainer wanted**. Support very incomplete, but a basic "hello world" works.
+  - `solaris/illumos`: @devnexen. Support very incomplete, but a basic "hello world" works.
   - `wasm`: **maintainer wanted**. Support very incomplete, not even standard output works, but an empty `main` function works.
 - For targets on other operating systems, Miri might fail before even reaching the `main` function.
 

ci/ci.sh

@@ -148,6 +148,7 @@ case $HOST_TARGET in
     MIRI_TEST_TARGET=aarch64-linux-android  run_tests_minimal $VERY_BASIC hello panic/panic
     MIRI_TEST_TARGET=wasm32-wasi run_tests_minimal $VERY_BASIC wasm
     MIRI_TEST_TARGET=wasm32-unknown-unknown run_tests_minimal $VERY_BASIC wasm
+    MIRI_TEST_TARGET=x86_64-unknown-illumos run_tests_minimal libc-misc concurrency/simple pthread-threadname libc-getentropy libc-getrandom
     MIRI_TEST_TARGET=thumbv7em-none-eabihf run_tests_minimal no_std
     # Custom target JSON file
     MIRI_TEST_TARGET=tests/avr.json MIRI_NO_STD=1 run_tests_minimal no_std

src/shims/unix/foreign_items.rs

@@ -594,7 +594,7 @@ pub trait EvalContextExt<'mir, 'tcx: 'mir>: crate::MiriInterpCxExt<'mir, 'tcx> {
             }
             "getentropy" => {
                 // This function is non-standard but exists with the same signature and behavior on
-                // Linux, macOS, and FreeBSD.
+                // Linux, macOS, FreeBSD and Solaris/Illumos.
                 if !matches!(&*this.tcx.sess.target.os, "linux" | "macos" | "freebsd" | "illumos" | "solaris") {
                     throw_unsup_format!(
                         "`getentropy` is not supported on {}",
@@ -611,6 +611,7 @@ pub trait EvalContextExt<'mir, 'tcx: 'mir>: crate::MiriInterpCxExt<'mir, 'tcx> {
                 // FreeBSD: https://man.freebsd.org/cgi/man.cgi?query=getentropy&sektion=3&format=html
                 // Linux: https://man7.org/linux/man-pages/man3/getentropy.3.html
                 // macOS: https://keith.github.io/xcode-man-pages/getentropy.2.html
+                // Solaris/Illumos: https://illumos.org/man/3C/getentropy
                 if bufsize > 256 {
                     let err = this.eval_libc("EIO");
                     this.set_last_error(err)?;

src/shims/unix/solarish/foreign_items.rs

@@ -16,7 +16,7 @@ pub trait EvalContextExt<'mir, 'tcx: 'mir>: crate::MiriInterpCxExt<'mir, 'tcx> {
         link_name: Symbol,
         abi: Abi,
         args: &[OpTy<'tcx, Provenance>],
-        dest: &PlaceTy<'tcx, Provenance>,
+        dest: &MPlaceTy<'tcx, Provenance>,
     ) -> InterpResult<'tcx, EmulateForeignItemResult> {
         let this = self.eval_context_mut();
         match link_name.as_str() {
@@ -51,6 +51,8 @@ pub trait EvalContextExt<'mir, 'tcx: 'mir>: crate::MiriInterpCxExt<'mir, 'tcx> {
                 )?;
                 this.write_scalar(res, dest)?;
             }
+
+            // Misc
             "getrandom" => {
                 let [ptr, len, flags] =
                     this.check_shim(abi, Abi::C { unwind: false }, link_name, args)?;

tests/pass-dep/shims/libc-misc.rs

@@ -153,12 +153,12 @@ fn test_sync_file_range() {
 
 /// Tests whether each thread has its own `__errno_location`.
 fn test_thread_local_errno() {
+    #[cfg(any(target_os = "solaris", target_os = "illumos"))]
+    use libc::__errno as __errno_location;
     #[cfg(target_os = "linux")]
     use libc::__errno_location;
     #[cfg(any(target_os = "macos", target_os = "freebsd"))]
     use libc::__error as __errno_location;
-    #[cfg(any(target_os = "solaris", target_os = "illumos"))]
-    use libc::__errno as __errno_location;
 
     unsafe {
         *__errno_location() = 0xBEEF;